Image recording apparatus simultaneously recording a plurality of line images with a plurality of light beams

An image recording apparatus comprising:

• a single reference clock signal generating unit which generates only a single reference clock signal;
• a light beam generating unit which simultaneously generates a plurality of light beams;
• a single beam detect sensor which detects said generated plurality of light beams to output a plurality of light beam detection signals corresponding to said plurality of light beams;
• a plurality of image clock signal generating units connected to said single reference clock signal generating unit and said beam detect sensor, each of said plurality of image clock signal generating units responding to said single reference clock signal and comprising a synchronization clock generating unit for synchronizing said single reference clock signal with a corresponding light beam detection signal to generate an image clock signal of the same period at a predetermined timing, wherein the time period from the falling edge of the light beam detection signal to the output of the image clock signal is corrected to correspond to the sum of pulse width of the reference clock signal and an IC internal delay;
• a modulating unit connected to said image clock signal generating units and responding to said plurality of image clock signals to modulate said plurality of generated light beams based on a plurality of image data;
• a driving circuit connected to said light beam generating unit and said modulating unit and drives said light beam generating unit based on said plurality of modulated light beams;
• a light beam scanning unit which performs periodic scan on a photoreceptor with said plurality of light beams generated by said light beam generating unit;
• and
• an image recording unit which records an image based on said plurality of light beams with which the scan is performed on said photoreceptor.